Athscl autologous vein CABG with refractory angina pectoris

This code signifies the presence of atherosclerosis specifically affecting a patient's own vein graft(s) used for coronary artery bypass surgery. This graft disease is further complicated by the patient experiencing refractory angina pectoris, meaning chest pain that is difficult to control with standard medical therapy. It indicates a significant and persistent issue with the revascularized coronary circulation.

Use this code when documentation clearly states atherosclerosis of an autologous vein coronary artery bypass graft and the patient's clinical presentation includes refractory angina. This typically applies to patients who have undergone CABG using their own saphenous vein, for example, and are now experiencing recurrent, severe angina despite optimal medical management. Supporting documentation would include cardiology notes, stress test results, and angiography reports confirming graft atherosclerosis and the intractable nature of the angina.

• Ensure the documentation specifies "autologous vein" graft; do not use for synthetic or arterial grafts.
• Confirm that the angina is explicitly described as "refractory" or "intractable" to justify this specific subclassification.
• Sequence this code as a primary diagnosis when it is the main reason for the encounter, or as a secondary diagnosis if it's a co-morbidity impacting treatment.